Specific IgE - Penicillin V
- Sample Type
- Standard
- Fasting
- No
- Unit
- kUA/L
Penicillin V specific IgE testing is a diagnostic tool for identifying drug-induced Type I hypersensitivity. This test helps determine if a patient is at risk for an immediate allergic reaction, including anaphylaxis, upon exposure to Penicillin V. It is often ordered for patients with a history of penicillin 'allergy' to confirm whether they can safely receive beta-lactam antibiotics.
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Check Your Result
Enter your lab result to see where you stand compared to the standard reference range.
Why Context Matters
Specific IgE for penicillin decreases over time (half-life of IgE). A person may have had a true allergy in the past but may test negative years later despite remaining at risk. Furthermore, cross-reactivity with other penicillins or cephalosporins may not be fully captured by a single Specific IgE test.
Lab ranges are statistical averages, not biological laws. "Normal" for a 20-year-old male isn't normal for a 60-year-old female.
Clinical References
Source-of-truth databases and clinical guidelines for Specific IgE - Penicillin V:
Official Sources
- Allergy Blood Test: MedlinePlus Medical TestMedlinePlus
Research & Guidelines
Related Indicators
Medically Reviewed by Dr. Binoy Babu, MBBS
Board Certified Doctor • 10+ Years Clinical Experience
Dr. Babu is a practicing physician dedicated to empowering patients with clear, actionable medical information. He founded 2opi to bridge the gap between complex lab reports and patient understanding, ensuring everyone has access to a reliable second opinion.
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